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libpcap
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Check for valid port numbers (fit in a 16-bit unsigned field).

This commit is contained in:
Guy Harris 2010-05-29 00:02:49 -07:00
parent 65f960da71
commit 9980b3601f
1 changed files with 19 additions and 0 deletions
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19
gencode.c
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@ -6197,6 +6197,10 @@ gen_scode(name, q)
/* override PROTO_UNDEF */
real_proto = IPPROTO_SCTP;
}
if (port < 0)
bpf_error("illegal port number %d < 0", port);
if (port > 65535)
bpf_error("illegal port number %d > 65535", port);
#ifndef INET6
return gen_port(port, real_proto, dir);
#else
@ -6238,6 +6242,15 @@ gen_scode(name, q)
/* override PROTO_UNDEF */
real_proto = IPPROTO_SCTP;
}
if (port1 < 0)
bpf_error("illegal port number %d < 0", port1);
if (port1 > 65535)
bpf_error("illegal port number %d > 65535", port1);
if (port2 < 0)
bpf_error("illegal port number %d < 0", port2);
if (port2 > 65535)
bpf_error("illegal port number %d > 65535", port2);
#ifndef INET6
return gen_portrange(port1, port2, real_proto, dir);
#else
@ -6389,6 +6402,9 @@ gen_ncode(s, v, q)
else
bpf_error("illegal qualifier of 'port'");
if (v > 65535)
bpf_error("illegal port number %u > 65535", v);
#ifndef INET6
return gen_port((int)v, proto, dir);
#else
@ -6412,6 +6428,9 @@ gen_ncode(s, v, q)
else
bpf_error("illegal qualifier of 'portrange'");
if (v > 65535)
bpf_error("illegal port number %u > 65535", v);
#ifndef INET6
return gen_portrange((int)v, (int)v, proto, dir);
#else